package demo1;

import java.util.*;

public class Test1 {
    public static void main(String[] args) {
        List<Integer> list = new ArrayList<>();
        List<Integer> list1 = new ArrayList<>();

        list.addAll(list1);
        System.out.println(list);
        Queue<Integer> queue = new LinkedList<>();
        Stack<Integer> stack = new Stack<>();

    }
}
